Tyre Pressure

[ICER33]

i am running my car up at calder on fri night and was curious as to what tyre pressure i should be running

the car makes 200 rwkw and it has fairly rigid coilovers (sustec pro) and is running 17 x 8.5 on bridgestone potenza's

opinions would be appreciated

cheers

[Fixxxer]

I'd do your first run as a test to see how much wheelspin you get. If its too much (a little wheelspin can be beneficial) then drop the pressure. I wouldn't go lower than 20psi really on a street tyre, try around 25psi and see how you go.

Fixxxer

[RB30-POWER]

A street tyre will give maximum traction at standard working pressure.

They are not slicks, dont try and let them down as your performance will suffer along with tyre life.

[Al]

Good chance i will be working at Calder on Friday night. If you see a big guy at Credentials, don't forget to say hi

[ICER33]

will do mate. keep an eye out for two r33's. white one (stylan) and mine silver (icer33)

come and say gday

[ECR033]

A street tyre will give maximum traction at standard working pressure.

They are not slicks, dont try and let them down as your performance will suffer along with tyre life.

I agree that street tyres will not perform in the same way as slicks or drag radials, but totally disagree that a street tyre will give maximum traction (for a straight line drag) at the normal working pressure.

Reducing the tyre pressure to say 20psi will enable more of the tyre surface to come into contact with the track as the tyre compresses on launch resulting in improved traction off the line.

Best way to check is to do your first run at your normal tyre pressure and then reduce the pressure on your second run to see if there's any difference. I'd be surprised if your 60' time wasn't at least .1 - .2 quicker.

[Al]

I was working at the "T" intersection tonight, saw both your cars, but didn't know they where you till now . Was to cold to hang around, so i left straight away, after i finished.

How did ya go?